1X111112X2111211
1X1X1XX212111211
1X1XX11212121211
12111XX2XX111211
1211XX121X121211
121XX1X2XX121211
XX11X1X21X111211
XX11XXX2X2121211
XX1X1X12XX121211
X21111X212121211
X21X11121X111211
X21XXX12X2111211
2X1111X21X121211
2X111X1212111211
2X1X11X2X2111211
2X1XXX12XX111211
2211X112XX121211
2211X1X212111211
221X1X12X2121211
221XXXX21X121211
